Jason Day has eight TOUR titles in the last 23 months.

The last time golf fans saw Jason Day, he was in a golf cart being whisked away to the clubhouse at East Lake after completing just eight holes. For the second straight week, a nagging back injury was forcing Day to withdraw. As a result, the man who had entered the FedExCup Playoffs ranked No. 1 ended up finishing sixth in the season-long competition. Day later withdrew from the ISPS HANDA World Cup, fearing the long flight from Ohio to Australia could aggravate his back troubles. So there will be questions when Day returns, likely at the Tournament of Champions, after his three-win season. But he has battled back problems before – even winning the grueling World Golf Championships-Dell Match Play last year while getting 10 hours of treatment – so there is no reason to believe Day will be anything but at his best after a four-month break. And Day’s best has propelled him ...